Trolley.



No. 718,678'. PATBNTBD'JAN. 20,1903.

. G. R. TOMB.

, TROLLEY. APPIY'IGATION FILED MAY Z1, 1902.`

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No. 718,678. PATENTED JAN. 20, 1903.

G. R. TOMB.

TROLLEY.

APPLICATION FILED MAY 21, 1902.

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No MODEL,

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GEORGE R. TOMB, OF LORAIN, OHIO, ASSIGNOR TO THE PNEUMATIC RAIL- WAY EQUIPMENT COMPANY, OF CLEVELAND, OHIO, A CORPORATION.

TROLLEY.

SPECIFICATION forming part of Letters Patent No. 718,678, dated January 20, 1903.

Application tiled May Z1, 1902. Serial No. 107,324. (No model.)

To @ZZ whom, it may concern: cross-head and at the other end on an ad- Beit known that I, GEORGE R. TOMB,a citijusting-nut 15, mounted on a threaded porzen of the United States, residing at Lorain, tion 13a of the connecting-rod 13. in the county of Lorain and State of Ohio, A cylinder 16 is headed on the iiauge 7and 55 5 have invented new and useful Improvements is secured thereto by bolts passing through a in Trolleys, of which the following is a specirim 17,' secured on the end of the cylinder cation. 16. A piston 18 is snugly mounted in the cyl- My invention relates to improvements in inder 16, and hinged thereto isa piston-rod trolleys; and the object of the same is to con- 19, which is oppositely connected to an ad- 6o lo struct a spring-actuated trolley which will j ustable clip 20, embracing the trolley-pole5 be provided with automatic means for pulland firmly clamped thereto. ing the trolley-pole down Whenever the sheave 'Mounted in the flange 7 and extending into thereon jumps the Wire. the forward compartment of the cylinder 16 The novel constructionemployed by me in are buffers comprising stems 21, carried by 65 carrying out my invention is fully described pistons 22, snugly fitting cylinders 23, proin this speciiication and claimed, and illusvided with heads 24, apertured at to pertrated in the accompanying drawings, formmit the outflow of air. Springs 26 bear on ing a part thereof, in whichthe pistons 22 and together with the air in Figure 1 is a vertical longitudinal section the cylinders serve to retard the movement 7o zo of the means for operating the trolley-pole, of the pistons 22 and serve as buffers for the the trolley beingin engagement withthe wire. piston 18. These buffers keep the trolley- Fig. 2 is a plan View of the same, partly in pole 5from being brought down too suddenly. section,with the trolley down. Fig. 3 isa ver- A T-pipe 27 is connected by one arm 27 to tical longitudinal section through the valve-v the rear head of the cylinder 16. The other 75 z5 boX with the valve closed. Fig. 4 is a side arm 27b of the T is capped at 28, and slidingly elevation of the same. Y Fig. 5 is a section on mounted Within this arm is -a cup-valve 29, the line 5 5, Fig. 4. Fig. 6 isa detail section which is normally held against the cap by a of the valve 37 closed. Fig. 7 is a similar coiled spring, which bears on the bottom of view, the valve open. the cup. A stem is connected at one end 8o 3o Like numerals of reference designate likel to the bottom of the cup 29 and at the other parts in the diiferent views of the drawings. end to a Iiexible member 31, which is con- 'lhe numeral 1 designatesarotatable horinected to a coiled spring 31a, which is atzontal platform, which is mounted on a vertached to the piston 18. The stem 27 c is contical spindle 2, passing through a base-plate nected to a pipe 32, which is passed down 85 2. .Standards 3 are mounted on the platform through the spindle 2 and connects with a 1, and pivoted thereto by a cross-pin 4 is a cylinder 33, carried by the car and containtrolley-pole 5, which is prolonged beyond the ing air under pressure. A ball-joint 34 is pin to form an arm 6. A flange 7 is formed formed in the pipe 32 and leaves the platform integral with the platform 1 and in combina- 2 free to turn. By means of the arrange- 9o 4o tion with two lugs 8 serves to support tWo parment just described when air is admitted into allel guide-rods 9, on which a cross-head 10 is the pipe 32 it is free to iiow into the cylinder slidingly mounted. Spiral springs 11 sur- 16 until the piston 18 runs forward, when round the guide-rods 9 and bear at one end the valve 29 Will be operated to close the `on the cross-head 10 and at their other ends mouth of the stem 27c and almost entirely 95 on adjusting-nuts 12, which serve to regulate shut off the flow of air into the cylinder 16. the tension of the springs 11. A connecting- A small quantity of air can still pass into the rod 13 connects the cross-head 10 and the arm cylinder 16, so the action of the cup-Valve 29 6 on the trolley-pole, which is thereby held is that of a reducing-valve to clear the flow up in contact with the Wire by the expansion of air. 5o force of the springs 11. A spring 14 is mount- A box 35 is mounted in the motormans vesed on the rod 13 and bears at one end on the tibulek on the car and surrounds a valve-casing 36, connected in the pipe 32. A valve 37 is mounted in the casing and has a stem 38, bearing an arm 39, carrying a pin 39, A spring 40 is connected at one end to the arm 39 and at the other end to the box 35 and serves to open the valve when the arm 39 is released. A trip-lever 41 is fulcrumed on a pin seated in a standard 42, footed on the box 35. The upper short arm 41 is rounded o on one side to adapt it to be engaged by the pin 39 and be displaced. A roller 43 is carried by an armature 44, mounted in guides 45 and located opposite the poles of apair of electromagnets. The coils 46 of the electromagnets are connected in series with the trolley-pole. The armature 44 is located in position to be attracted by the magnets to raise the roller 43 up into engagement with the long arm 41b of the lever 41. When the current through the coils 46 is broken, the armature will drop and cause the roller to release the trip-lever 41 to release the arm 39 and permit the spring 40 to open the valve 37 and allow the air to iiow to the cylinder 16.

The slide 47 is mounted in the guides in the box 35 and carries stops 48, which limit its movement. A flexible member 49 is connected at one end to the slide 47 and at the other to the arm 39. A conductors cord 50 is connected to the upper end of the slide 47 and serves to operate the slide to pull it upto actuate the arm 39 to close the valve 37 and bring the pin 39 into engagement with the trip-lever 41 to set it. Simultaneously with the closing of the valve 37 a port 37 is opened to the atmosphere, which permits the air in the upper portion of the pipe 32 to escape. As soon as the air in the pipe 32 has been released the pressure of the confined air in the cylinder 16 will act on the cup-valve 29 and overcome the force of the spring 31 and the air in the rear of the cup which will leak out alongside the valve and open the valve 29 to release the air in the cylinder and permit the trolley to rise up into engagement with the wire.

A plug 51 is provided for insertion under the armature 44 when it is desired to keep it from dropping and releasing the trip to open the valve 37 when the current passingth rough the coils 46 is broken. A switch 52 is also connected in circuit with the coils 46 to serve to break the circuit through the coils 46 to open the valve 37 to pull down the trolleypole 5 whenever desired.

In operation the trolley is normally in engagement with the wire, a current is passing through the coils 46, the trip 41 is in engagement with the roller on the armature 44 and with the pin on the arm 39, the valve 37 is closed against the iiow of air from the cylinder 33 into the cylinders 16 via the pipe 32, and the cylinder 16 is open to the atmosphere. If the trolley 5 should now jump 0E the Wire, the circuit through coils 46 is broken and the armature 44 is released, which releases the trip 41 and permits the spring 40 to open the valve 37 and permit the air from the cylinder 33 to flow into the cylinder 16 to actuate the piston 18 and pulldown the trolley 5. By now pulling the cord 50 the valve 37 can be closed and the port 37 be opened and the trolley-pole 5 released. The slide 47 is held up by means of the cord 50 until the trolleypole 5 engages the wire, when a circuit will be established through the coils 46, which will raise the roller on the armature 41 up into engagement with the trip 41 and hold the valve closed, after which the slide 47 is pulled down.

I do not wish to be limited as to details of construction, as these may be modified in many particulars without departing from the spirit ot' my invention.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a device of the class described, the combination with a cylinder provided with air connections, a valve mounted to control the flow of air into said cylinder, a piston mounted in said cylinder and connected to operate said valve, a trolley-pole, a pistonrod pivoted to said piston and to said trolleypole, parallel guides, a cross-head mounted on said guides, springs mounted in said guides and bearing on said cross-head, a connecting-rod connecting said cross-head and said trolley-pole, substantially as described.

2. In a trolley, the combination of a trolleypole, means for holding said trolley up in engagement with the conductor, a cylinder provided with a piston, means for connecting said piston and said trolley-pole, a pipe connected to said cylinder, a valve mounted in said pipe to control the supply of air thereto, and means connecting said valve and said piston, substantially as described.

3. In a trolley, the combination of a trolleypole, means for holding said trolley-pole in engagement with the conductor, a cylinder provided with a piston connected to said trolley-pole, a T connected by one arm to said cylinder, and a pipe connected to the stem of said T, a valve slidingly mounted in the arms of said T, a spring bearing on said valve to hold it in its normal open position, a flexible member connecting said piston and said valve, substantially as described.

4. In a trolley, the combination of trolleypole, means for holding said trolley-pole in engagement with the conductor, a cylinder provided with a piston and having air connections, a slidingly-mounted valve arranged to control the admission of air to said cylinder, and means for connecting said Valve and said piston, substantially as described.

5. In a trolley, the combination with a trolley-pole, a cylinder provided with air connections, a piston mounted in said cylinder and connected to said trolley, means for controlling the ow of air into said cylinder, and buffers mounted in said cylinder and located to check the movement of said piston to keep IOC IIO

said trolley from being pulled vdown too quickly, substantially as described.

6. In a device of the class described, the combination with a trolley, of a cylinder provided With a piston connected to said trolley,

a pipe connected to said cylinder, a valve l mounted in said pipe, an electromagnet in circuit with said trolley and provided With an armature bearing a roller, a lever connected to operate'said valve, and a trip mounted to engage said roller and said lever l when said armature is attracted by said magnet, said roller being arranged to release said trip when the circuit through said magnets is broken, substantially as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses. f

GEORGE R. TOMB.

Witnesses:

GEO. E. HALL, S. H. WILLIAMS. 

